• 专利标题:   Making microwave enabled low oxygen graphene sheets involves mixing graphite powder with solution of concentrated sulfuric acid and nitric acid, and subjecting the resultant mixture to microware irradiation.
  • 专利号:   US2013266501-A1
  • 发明人:   HE H, CHIU P L, MASTROGIOVANNI D D T, GARFUNKEL E
  • 专利权人:   UNIV RUTGERS STATE NEW JERSEY
  • 国际专利分类:   C01B031/00, C01B031/04
  • 专利详细信息:   US2013266501-A1 10 Oct 2013 C01B-031/04 201370 Pages: 22 English
  • 申请详细信息:   US2013266501-A1 US776366 25 Feb 2013
  • 优先权号:   US504495P, US776366

▎ 摘  要

NOVELTY - Making (M1) microwave enabled low oxygen graphene sheets (ME-LOGr) involves: mixing graphite powder with a solution of concentrated sulfuric acid and nitric acid; and subjecting the resultant mixture to microware irradiation until a finely dispersed suspension of ME-LOGr sheets is formed in the solution. USE - For making microwave enabled low oxygen graphene sheets (ME-LOGr) (claimed) for electromagnetic interference (EMI) shielding in aerospace applications; in biomedical applications, such as drug delivery and photothermal and photodynamic therapies. ADVANTAGE - The obtained highly conductive amphophilic graphene sheets, can be directly and rapidly fabricated from cheap and abundant graphite particles without post reduction processing, and can be dispersed in aqueous or organic solvents without stabilizers; have much larger sizes with fewer defects, better thermal stability and comparable or higher conductivity to those reported solution processable graphene sheets. The method is simple and scalable method for quickly and directly producing highly conductive low-oxygen graphene sheets and monodispersed low-oxygen graphene nanosheets. The microwave heating produced by the electromagnetic radiation allows for extremely fine control of the molecular alignment, and thus the free volume, of the resulting graphene sheets. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for ME-LOGr product produced by the method (M1).